Shuttle-lock for looms.



No. 789,018. PATENTED SEPT. 15, 1903.

. P. A. MILLS.

SHUTTLE LOOK FOR LOOMS.

APPLICATION FILED SEPT. 24, 1902.

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No.'739,0 18. PATENTED SEPT. 15. 1903.

' F. A. MILLS.

SHUTTLE LOOK FOR LOOMS.

APPLICATION FILED SEPT. 24.1902.

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UNITED STATES Patented September 15, 190 3.

PATENT OFFICE.

FRANCIS ARTHUR MILLS, OF LAWRENCE, MASSACHUSETTS, ASSIGNOR OF- ONE-HALF TO GROSVENOR EMMONS, OF METHUEN, MASSACHUSETTS.

SHUTTLE-LOCK FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 739,018, dated September 15, 1903. Application filed September 24,19e2. Serial 110424.705. (Nd model.)

To all whom it may concern:

Be it known that I, FRANCIS ARTHUR MILLS, a citizen of the United States of America, residing at Lawrence, in the county of Essex and State of Massachusetts, have in vented certain new. and useful Improvements in Shuttle- Locks for Looms, of which the following is a specification.

My invention relates to that class of shuttle-locks in which the force of the impact of the shuttle upon a strap crossing the line of movement of the picker-stick is caused to actuate the binders to lock the shuttle, and in the claims appended hereto 1 will point out the parts and combinations of parts which constitute my invention. In the combination of devices or parts for eife'cting this result the interposition or agency of a friction or brake device consisting of a pivoted armed rocking disk in direct connection with the impact-receiving strap and located between its impact-receiving ends is the primary element and in its function is the means for automatically setting itself in the proper position to perform its functions of yieldingly stopping and locking the shuttle in the opposite box while performing its impact function in the other shuttle-box. I attain these objects by mechanism shown in the accompany; ing drawings, in which- Figure 1 shows infront view the lay of a loom, illustrating the application thereto of my improved shuttle-lock mechanism. 2 is a rear view of the same. Fig. 3 is a top View of the same. Fig. 4 shows enlarged in top view theleft end of the lay with the shuttle in its locked position. Fig. 5 shows enlarged in bottom View the friction device on the under side of thelay and the friction-arm connection of said device with the strap which extendsaround the ends of the lay and connects the binders at each end thereof, as in Fig. 3. Fig. 6 is'a cross-section of the same, and-Fig. 7 shows a cross-section on the line as of Fig. 4. y

In the drawings I have shown one way of applying my shuttle-lock mechanism to the lay of a 100111 and wherein the shuttle-race lay 1 has the usual slot 2 for the picker-stick 5o 3, the shuttle-box 4:, and the binders 5, piv- Fig.

otally mounted at 6 in the shuttle-boxes in the well-known ways.

The following description, read in conuection with the accompanying drawings, will enable any person skilled in the art to which myinvention relates to understand its nature and to practice it in the form in which I prefer to employ it; but it will be understood that,

my invention is not limited to the precise form, construction, and arrangement of the parts herein illustrated and described, as various modifications and changes may be made without exceeding the scope of the claims in which my invention is set out.

In the construction shown the binders for the shuttle are preferably arranged to form the front side of the shuttle-boxes, and a strap 7,extending along the front of the lay,is passed,

around its ends, crossing the path of movement of'the'picker-stiok,and around a support 8, mounted on the rear side of the shuttle-box, and thence, preferably crossing at right angles over above the latter, is connected by its right angled ends to the posts 9 on the free inner ends of the binders. The advantage of connecting the strap to the binders by crossing over the top of the lay will be presently stated. As the binder is on the front side of the lay,

the support 8 for the right-angled end of the strap is at the rear side'of the lay, so that a pulling action on the strap under the force of the impact of the I shuttle on the picker will cause the pull on the strap to be at right angles to the binder, and thereby give it the full force of the pull,and consequently an instantaneous and effective pressure of the binder upon the shuttle to lock it at the end of its flight. This way of connecting the strap to the free end of the binder across and over the path of the shuttle gives the binder a full and direct pressure, caused by the blow of the shuttle against the picker,'and constitutes a feature of my improvement. The fixed support 8, on which the pull of the strap upon the binder is made, maybe a stud, a spool,or lever of any kind so long as it permits of a right-angle pull upon the binder againstthe shuttle.

As the strap would fail of its func provide a frictional armed disk device in the nature of a pivoted rocking disk brake located on the lay and preferably mediately of its length and preferably on its under side.

A simple and elfective form of friction device is shown and consists of a frictiorrdisk having an arm 10,pivoted by a clam p-bolt 11, passing vertically through a base-disk l2,and a spring-pressed clamping-disk 13, between Which disks the friction-arm is clamped bya nut 17 on the end of the bolt. The base-disk is bolted to the under side of the lay, and the pivoted friction-arm projects horizontally in front of the lay to connect with the impactreceiving strap. To give the proper frictional resistance to the rocking movement of the arm on its pivot, a friction-disk 15, of leatheror othersuitable material, is fitted on the bolt between the pivoted arm-disk and the fixed and the spring-pressed clamping-disks, and the degree of frictional pressure on the arm-disk is adjusted and controlled by the spring 16 on the bolt and a nut 17,wl.ich drives the spring against the clamping-disk. In Fig. 5 the spring-pressed clamping-disk is shown with a pin 18 engaging lugs 19,depending from the base-plate to prevent the disk from rotating with the vibratory movement of the pivoted friction-arm as it is pulled back and forth by the impact of the shuttle. A nut 20 on the bolt locks the nut 17 to maintain the set tension of the spring. The effect of the impact of the shuttle on the picker at either end is to actuate the arm of the friction device to cause the shuttle to be received with a gradually-cushioning stop, resulting in two important advantagespreventing rebound of the shuttle and the breaking of the copfilling. The avoidance of a sudden pulling or jerking of the strap is due to the resistance of its friction-connected pivoted rock-arm, which has the effect to soften or deaden the blow of the shuttle on the picker, because the arm is caused to be pulled gradually by it to the limit of the movement of the arm, the vibrations of which are controlled by the stops 21 on the base-disk, as seen in Fig. 5. The degree of the resistance to the movement of the arm according to the requirements of the loom is regulated by the tension of the spring to give more or less frictional force to the clamping-disk upon the disk of the friction-arm. While the friction-arm is caused to serve as a brake to control the action of the binders upon the flight of the shuttle against the picker at one end of the lay, the movement of the friction-arm in effecting this brake action on the strap serves to set the friction-arm in position to be pulled or rocked by the strap forgradually stopping and cushioning the impact of the shuttle in its flight in the opposite shuttle-box, so that the rocking friction device is automatically set to control the locking function of the binders on the flight of the shuttle into each box.

one by deadening the blow of the shuttle by the action of the pivoted friction device upon the strap, the other by the action of the pivoted friction device upon the binder, both actions controlled by the degree of friction put upon the pivoted friction-arm. The stopping of the shuttle stops the pulling of the strap and sets the friction-arm for the pullof the strap in the opposite direction.

\Vhile I have described the friction device as having provision for limiting the vibration of the pivoted friction-arm at a given point under the yielding pulling action of the strap, I provide adjustable means for clamping the strap to the lay at points between the shuttles impact and the said friction-arm for positively stopping the shuttle ata given point, as in my patent of August 5, 1902, No 706,190, whereby, as in magazine-looms, the bobbin may be transferred from the magazine to the shuttle at a given point in the shuttle-box to cause the shuttle to be in the proper position to receive the delivered bobbin.

Looking at Fig. 1 will be seen a plate 22, crossing the strap and bolted to the lay, so that the strap will be free to move under the plates when the friction device is used to gradually stop the shuttle; but such plates can be bound hard upon the strap, so that the pull upon the strap by the impact of the shuttle upon the picker will be from this clamp-plate and upon the binder to suddenly stop the shuttle at the proper point in the box. The strap is provided with the buckles 23, by which to adjust its length in fitting it to the lay and to take up slack of the strap. A fixed button on the pivoted friction-arm connects it with the strap.

In Figs. 1, 3, and 5 may be read the function of the pivoted friction device on the impact-receiving strap. In Figs. 1 and 2, looking at the left, the picker 24 is seen as having been driven by the impact of the shuttle to the limit of its flight, forcing with it the strap and pulling the friction-arm with it, thereby gradually stopping the shuttle and automatically setting the friction-arm to render its brake function active upon the picker at the right by the return flight of the shuttle by causing the strap to pull the arm in the opposite direction. In Fig. 5 the friction-arm is shown as having been pulled by the strap to the left, and in dotted lines the position of the frictionarm is shown when pulled in the opposite direction bythe strap, and it is the employment of a pivoted rocking friction device operatively connected with the strap for brakingthe latter wherein my invention broadly resides.

I claim-- '1. In a loom and in combination with a shuttle-binder the picker, a strap connected to the movable end of the binder and crossing the path of movement of the picker, and a brake for the strap consisting of a pivoted friction-diskhaving an arm connected with the strap and a friction clamping-disk pivoted on the armed disk.

2. In a loom and in combination, the lay, shuttle -boxes, pickers, pivoted binders, a strap crossing the path of the movement of the pickers and connected to the free end of the pivoted binders, and a pivoted frictionally-bound disk, fixed t0 the lay and having a rocking arm or lever to the free end of which the said strap is connected between its connection with the binders.

3. In a loom and in combination the lay,

-shuttle-boxes, pickers, pivoted binders, a

strap passing around the shuttle-boxes and connected to the pivoted binders, and a pivoted disk friction device fixed to the lay and having a spring-pressed frictionally-bound lever-arm to which the strap is connected and which is caused to operate with a brake function upon' the strap when pulled by the impact of the shuttle upon the picker.

4. In a loom and in combination, the lay, shuttle boxes, pickers, pivoted binders, a strap-crossing the. path of movement of the picker around a stud on one side of each shuttle-box and crossing over the shuttle-boxes fastened to the pivoted binders, and a pivoted friction-disk having an arm connected to the strap and movable with it, and a friction-clamp for said armed disk.

5. In a loom and in combination the lay, shuttle boxes, pickers, pivoted binders, a

strap crossing the path of the picker and connected to the pivoted binders, a friction device fixed to the lay and having a springpressed frictionally-bound arm to which the strap is connected and movable with it under the impact of the shuttle, and stops arranged to limit the movements of the friction-arm under the impact of the shuttle upon'each end of the strap. a

6. In a loom and in combination the lay, shuttle -.boxes, pickers, pivoted binders, a

strap passingaround the shuttle-boxes,around a support fixed on one side of each shute tle-box and terminating in right-angled ends connecting the pivoted binders at the opposite sides of the boxes, and means for fastening the strap to that side of the lay opposite the said strap-support for operation in the way described.

7. In combination the lay, shuttle-boxes, pickers, pivoted binders, a strap crossing the path of the picker-stick and connected to the pivoted binders, and means connecting the strap to the lay, consisting of a disk fixed to the lay, a bolt depending therefrom, an armed disk pivoted on the bolt and connected to the strap, a disk on the bolt and means for looking it thereto, friction-surfaces flanking the armed disk, a spring and a not on the bolt for maintaining a frictional force on the armed disk, said force rendered active on the strap to gradually stop the shuttle at the end of its flight in either direction and to set the friction-arm by each impact of the shuttle. I

In testimony whereof I afiix my signature in presence of two witnesses.

FRANCIS ARTHUR MILLS. 

